The PS3 use's blue-ray - Blu-ray DVD-R's can store at least 40, if not 50 Gigabytes. Imagine playing GTA, and being able to sort out all of the cigarette butts on the curbside by brand. THAT is about how detailed Blu-ray games could be.

Another example:
Gran Turismo, with over 2k cars, and 50k car-specific upgrades by real brands with real models of car parts. And you'de be able to count the threads on the exhaust kit's rear bolt. How's that for Breaking it?